Apparatus for the control of electric circuits.



animi termine., os Lennon, Enseigne.

Aremefieus nos, man Genesee oir-ELECTRIC mineures.

'SSLS i i* Specification of 'Letters 'atent Patented Septfi il 4, jigpi-estilon le May 5, 1813. Serial No. '?65,673.

To aM whom it may concern.:

Be. it known that inline-ini' LinTNni, :i subject of the King oi Greet Britain, residing lat 7 ljrinees street, Westminster, London, Engler. i, have invented new :ind useful improvements in Apparatus for the Control`- of Electric Circuits of which the following` is si specification.

My invention rela-tes to apparatus for euton'izitie'ally controlling or regulating eleetric circuits wherein o dynamo is arranged to charge a battery of aeclnnulzttors,both. the dynamos and the accumulatore providing Current for the electric lamps, ete., 'fed li); the system, `the said apparatus heing of the kind wherein the rheostat is designed to introduee resistance intoa or Withdraw it from7 n lighting circuit in order to compensate for veri-ations in the voltage of the oeeunnilitters, the said -rheostnt having :i series of resistencias included in "the field circuit oi the dynamo and introduced therein or Withdrawn therefrom by the rheoste't urin operated by en electro-motor or equivalent device controlled by o contn'et voltineter,

'The object of my invention, is to provide that when the movement oia the rlieostot firm is reversed in either direction of travel such reversal sho-ll not simultnneously affect all' the cireuits controlled by the rheostat and to this end provide thatthe portion of the rheostet `arm which Carries the Contact or contacts for one set of resistances'shnll lieve a lcertain amount of ploy relatively to the portion or 'portions of the arm which enrries the eontuct or contacts for the. other set or sets. I

To enable my invention to he fully under# stood i will deseriiie it by reference to the accompanying drawing which shows die gruininetic-al-ly o. generalerwmgementoi e regulator of the type referred to9 ond in which two sets of resistonees ere qontrolied, one of these beingT in the lomp circuit 'the voltage of which it is desired to.. maintain constant9 while the. other isin the shunt iield circuit of 'the dynamo, into -whieli eiienit it" introduces or withdraws resistance accordingns the voltage of the supply eirouit tends to rise or foil )L represents :i shunt wound djvnnnio adapted to supply Current to o set oi' neon inniators i3 through finnneomatio Cubin und ent-out device C, :nid o n, lmnp eirc-,uitf hrougli that portion of the regulator which comprises the resistance o and the :irme9 ning/*ned to he moved oi'er tl electro-motel; CZ controlled oy the meter control @the mechanical con between the erin and motor (compris` this instance o rfi/:h c secured to theand engaged by :i pinion (f2 driven l n, ineens of e heit c3 1from theinotor (l). l The ance a. is designed to be introduced into, or out out of, the lomp Circuit D by the movew 55 ment of the arm c when actuated .by the eleotro'motor. The resistono@ o is in with the shunt field Winding of the djfnen i,- and introduces or outs out resistance :from lhis circuit by ldie movement off 'the suhsidiary :ii-ni or brush r)The movemen this lnier erin f is controlled by the. 'uio-iw nient of the ovni c., but in sul?, manner n t 'the said erin e* een move uy @erts s tence in either direction 'without niovin.; oi-1n f. For this purpose the arm o is in: with an i isolated foi-lied extension gl" which engages on either side with the z rif soy for exemple by ineens of en 'autr/zn projecting pin or projection .7st, obvious however, 'any other suii'ohie orrnngeinont Imay be iode use of for obtaining o like iesuit. v

With this arrangement it will he seen t reverse movement of the erin. c con place in either direction rior n, certain dis-- tance Without affecting the erin or brush j'. Then if by continued movement of :in-in o in Contact with the n iin or brush 7, soy noie resistance is inserted in the ield Cireu the dynamo, and the E.' M. E. redueech the voltmieter-Control e will respond, ond xviii. 1v-onse' the motor to forli in suoli e dire tion es to eut out resistance in the la "j circuit resistance o, which operation een he g55, eil'eeted without nioiing the arm f, :ind thereby n. hunting "i [lotion is avoided it is obvious that more than onesubs erin may be contolled in this manner 'ov n di;

-tlie :mn c, and thereby more than one set me; oi subsidiary resistencias, and do not f l fine myself to the particular aiirzuigenieink or oppiiention of the inveniion heroin shown, since it will be understood that is eusestible oit mamy variations. m5

Claims: l. ln an electric system, the combinati 1 mp oireuit, :i lmiierv fii. `aeeuiiimn- "'nuno, n, riieoszit tn'ovifledw i :i

series oi i isnnces, il im arm adepte-d to out om' ein of ences in and out, and an electr-if.: :om-tor 'or operating said arm, of'a'part operated 4by said rbeostat arm in both directions, for cutting in and out certain other of said resistan'ces, saidpart being connected with l l other of said series oi' resistances and capasaid arm by means permitting lost motion 1n both directions whereby when the movement of saidv arm 1s reversed in either d1- n'ection of travel, certain only.of said plurality of series .of resistances nre affected, without.immediately affecting others 2. In an electric system, the combination vvitli a lamp circuit, a battery of accumula,

tors, a dynamo, a rlieostat, provided with a pluralityoi" series/of resstances, a movable arm daptedto cut certain ofsaid resistances in and out, and an electric motor for lopen'atlng said arm, of a subsidiary resistance contro-llingarm for cutting in and out 1 certain fother .of said resistances, ,driven by the main' arm in both directions, but having a` certain amount of play with respect thereto,y in. both directions of movement of said x erm. adapted .to hcutcertan' of said resist "3. In autel; trici, lsysteirnithe cdmbination .witb aulampl'nirc'l" '6,1m battery of accumulatorsga dynamo', agrheostat, providedfwith al @plurality of series' :of resistances, a ,movable ance@ in and @ligand an electric motor `for ,oper-ating Said arm, ysaid rheostat arm be ln provided with bifurcated portions, of a su sidiary controlling arm located between said bifu'rcatedportions, and movable there-v by in both directions, for controlling certain bl? of slight relative movement with re- 'directions of movement thereof.

4. In an electric system, the combination with a lamp circuit, a battery of accumulators,v a dynamo, a rheostat comprising a series of resistances in the lamp circuit, a series of resistances in the shunt field winding of the dynamo, and a rbeostat arm for cutting in and out the lamp circuit resistance, of a part operatively connected with but movable with respectto the rheostat arm for euttin in and out the resistance in the shunt fiel winding of the dynamo, a motor for operating the rheostat arm, and a .voltmeterv control device for said motor,l where# b .the resistance in the lamp circuit may be e anged without immediately altering the resistance, the'shunt field windin'gvof .the 4 spect to said bifurcated portions, in bothl 

